POST-TEST FOR 3RD QUARTER (Part 1 )
Quiz by Charmaine Perio
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- Q1
Friction can be seen everywhere. Which of the following statements is true about friction?
A. It only exists when there is motion.
C. It acts on the same direction.
D. It always opposes motion.
B. It is the same as kinetic friction.
120s - Q2
To increase machine effectiveness, you apply lubricants. Which of the following cannot be used as lubricant?
D. wax
A. alcohol
C. oil
B. grease
120s - Q3
Friction plays an important role in your life. Which of the following statements is true?
A. It does not affect the motion of an object.
D. It pulls all objects towards the center of the Earth.
C. It is only present if gravity is also present.
B. It slows down or stops objects in motion.
120s - Q4
Force is push or pull that acts on an object. Which of the following is a force that opposes motion
A. acceleration
C. gravity
B. friction
D. mass
120s - Q5
The effect of friction can be desirable or undesirable. Which of the following shows an undesirable effect of friction?
B. It reduces speed of a moving vehicle.
C. It converts energy to heat and noise.
A. It allows you to grip things.
D. It helps in converting one form of motion into another.
120s - Q6
A child accidentally slides on a wet floor. What causes the child to slide on the floor?
D. volume
B. friction
C. gravity
A. air resistance
120s - Q7
It will be difficult if there is no friction. Which of the following sentences best describes frictional force?
B. It only occurs between solid surfaces and liquid surfaces.
C. It occurs when two surfaces touch against each other.
A. It occurs when two surfaces do not touch against each other.
D. It occurs on one surface.
120s - Q8
8. Rubbing your hands show frictional force. What do you create when you rub your hands?
B. heat
C. mass
A. gravity
D. volume
120s - Q9
A book on top of the table shows static friction. What do you think is static friction?
A. It is the strongest friction that keeps the book motionless.
C. It is the least friction that keeps the book motionless.
D. It is the least friction the keeps the book in motion.
B. It is the strongest friction that keeps the book in motion.
120s - Q10
Friction is present in our everyday lives. Which of the following situations involve friction?
A. Diver falling in the pool.
C. Rolling ball in a smooth surface.
B. Dropping water on the faucet.
D. Falling debris in a construction site.
120s - Q11
What causes the objects to fall toward the earth’s center?
A. acceleration
D. mass
C. gravity
B. friction
120s - Q12
Gravity attracts all physical bodies. Which of the following statements is true about gravity?
C. It pulls objects toward the ground.
D. It is grater on rough surfaces.
A. It stops the rotation and revolution of Earth.
B. It pushes everything away from the Earth.
120s - Q13
Gravity affects movement of an object. Which of the following situations show the effect of gravity?
D. Lighting a matchstick.
C. Fruit falling from the tree.
A. Rolling ball suddenly slows down and stops.
B. Appling breaks to stop a vehicle.
120s - Q14
Gravity pulls us down. What might happen if you move against gravity?
A. No force is needed
C. Less force will be needed
B. Nothing will happen
D. More force will be needed
120s - Q15
Gravity keeps the moon in orbit around the Earth. What will happen to the gravitational force if the moon is closer to Earth?
B. Decreases
D. Remains the same
C. Disappears
A. Increases
120s